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-rw-r--r--drivers/iio/adc/Kconfig48
-rw-r--r--drivers/iio/adc/cc10001_adc.c26
-rw-r--r--drivers/iio/adc/mcp3422.c1
-rw-r--r--drivers/iio/adc/ti-adc081c.c1
4 files changed, 59 insertions, 17 deletions
diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index eb0cd897714a..233d47b7dea8 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -20,6 +20,9 @@ config AD7266
Say yes here to build support for Analog Devices AD7265 and AD7266
ADCs.
+ To compile this driver as a module, choose M here: the module will be
+ called ad7266.
+
config AD7291
tristate "Analog Devices AD7291 ADC driver"
depends on I2C
@@ -52,8 +55,6 @@ config AD7476
AD7277, AD7278, AD7475, AD7476, AD7477, AD7478, AD7466, AD7467, AD7468,
AD7495, AD7910, AD7920, AD7920 SPI analog to digital converters (ADC).
- If unsure, say N (but it's safe to say "Y").
-
To compile this driver as a module, choose M here: the
module will be called ad7476.
@@ -63,8 +64,7 @@ config AD7791
select AD_SIGMA_DELTA
help
Say yes here to build support for Analog Devices AD7787, AD7788, AD7789,
- AD7790 and AD7791 SPI analog to digital converters (ADC). If unsure, say
- N (but it is safe to say "Y").
+ AD7790 and AD7791 SPI analog to digital converters (ADC).
To compile this driver as a module, choose M here: the module will be
called ad7791.
@@ -76,7 +76,6 @@ config AD7793
help
Say yes here to build support for Analog Devices AD7785, AD7792, AD7793,
AD7794 and AD7795 SPI analog to digital converters (ADC).
- If unsure, say N (but it's safe to say "Y").
To compile this driver as a module, choose M here: the
module will be called AD7793.
@@ -89,7 +88,6 @@ config AD7887
help
Say yes here to build support for Analog Devices
AD7887 SPI analog to digital converter (ADC).
- If unsure, say N (but it's safe to say "Y").
To compile this driver as a module, choose M here: the
module will be called ad7887.
@@ -117,6 +115,9 @@ config AD799X
i2c analog to digital converters (ADC). Provides direct access
via sysfs.
+ To compile this driver as a module, choose M here: the module will be
+ called ad799x.
+
config AT91_ADC
tristate "Atmel AT91 ADC"
depends on ARCH_AT91
@@ -127,6 +128,9 @@ config AT91_ADC
help
Say yes here to build support for Atmel AT91 ADC.
+ To compile this driver as a module, choose M here: the module will be
+ called at91_adc.
+
config AXP288_ADC
tristate "X-Powers AXP288 ADC driver"
depends on MFD_AXP20X
@@ -135,6 +139,9 @@ config AXP288_ADC
device. Depending on platform configuration, this general purpose ADC can
be used for sampling sensors such as thermal resistors.
+ To compile this driver as a module, choose M here: the module will be
+ called axp288_adc.
+
config BERLIN2_ADC
tristate "Marvell Berlin2 ADC driver"
depends on ARCH_BERLIN
@@ -151,6 +158,9 @@ config DA9150_GPADC
This driver can also be built as a module. If chosen, the module name
will be da9150-gpadc.
+ To compile this driver as a module, choose M here: the module will be
+ called berlin2-adc.
+
config CC10001_ADC
tristate "Cosmic Circuits 10001 ADC driver"
depends on HAS_IOMEM && HAVE_CLK && REGULATOR
@@ -170,12 +180,18 @@ config EXYNOS_ADC
of SoCs for drivers such as the touchscreen and hwmon to use to share
this resource.
+ To compile this driver as a module, choose M here: the module will be
+ called exynos_adc.
+
config LP8788_ADC
tristate "LP8788 ADC driver"
depends on MFD_LP8788
help
Say yes here to build support for TI LP8788 ADC.
+ To compile this driver as a module, choose M here: the module will be
+ called lp8788_adc.
+
config MAX1027
tristate "Maxim max1027 ADC driver"
depends on SPI
@@ -185,6 +201,9 @@ config MAX1027
Say yes here to build support for Maxim SPI ADC models
max1027, max1029 and max1031.
+ To compile this driver as a module, choose M here: the module will be
+ called max1027.
+
config MAX1363
tristate "Maxim max1363 ADC driver"
depends on I2C
@@ -201,6 +220,9 @@ config MAX1363
max11646, max11647) Provides direct access via sysfs and buffered
data via the iio dev interface.
+ To compile this driver as a module, choose M here: the module will be
+ called max1363.
+
config MCP320X
tristate "Microchip Technology MCP3x01/02/04/08"
depends on SPI
@@ -309,15 +331,18 @@ config TI_AM335X_ADC
Say yes here to build support for Texas Instruments ADC
driver which is also a MFD client.
+ To compile this driver as a module, choose M here: the module will be
+ called ti_am335x_adc.
+
config TWL4030_MADC
tristate "TWL4030 MADC (Monitoring A/D Converter)"
depends on TWL4030_CORE
help
- This driver provides support for Triton TWL4030-MADC. The
- driver supports both RT and SW conversion methods.
+ This driver provides support for Triton TWL4030-MADC. The
+ driver supports both RT and SW conversion methods.
- This driver can also be built as a module. If so, the module will be
- called twl4030-madc.
+ This driver can also be built as a module. If so, the module will be
+ called twl4030-madc.
config TWL6030_GPADC
tristate "TWL6030 GPADC (General Purpose A/D Converter) Support"
@@ -350,6 +375,9 @@ config VIPERBOARD_ADC
Say yes here to access the ADC part of the Nano River
Technologies Viperboard.
+ To compile this driver as a module, choose M here: the module will be
+ called viperboard_adc.
+
config XILINX_XADC
tristate "Xilinx XADC driver"
depends on ARCH_ZYNQ || MICROBLAZE || COMPILE_TEST
diff --git a/drivers/iio/adc/cc10001_adc.c b/drivers/iio/adc/cc10001_adc.c
index 115f6e99a7fa..8254f529b2a9 100644
--- a/drivers/iio/adc/cc10001_adc.c
+++ b/drivers/iio/adc/cc10001_adc.c
@@ -62,6 +62,7 @@ struct cc10001_adc_device {
struct regulator *reg;
u16 *buf;
+ bool shared;
struct mutex lock;
unsigned int start_delay_ns;
unsigned int eoc_delay_ns;
@@ -153,7 +154,8 @@ static irqreturn_t cc10001_adc_trigger_h(int irq, void *p)
mutex_lock(&adc_dev->lock);
- cc10001_adc_power_up(adc_dev);
+ if (!adc_dev->shared)
+ cc10001_adc_power_up(adc_dev);
/* Calculate delay step for eoc and sampled data */
delay_ns = adc_dev->eoc_delay_ns / CC10001_MAX_POLL_COUNT;
@@ -177,7 +179,8 @@ static irqreturn_t cc10001_adc_trigger_h(int irq, void *p)
}
done:
- cc10001_adc_power_down(adc_dev);
+ if (!adc_dev->shared)
+ cc10001_adc_power_down(adc_dev);
mutex_unlock(&adc_dev->lock);
@@ -196,7 +199,8 @@ static u16 cc10001_adc_read_raw_voltage(struct iio_dev *indio_dev,
unsigned int delay_ns;
u16 val;
- cc10001_adc_power_up(adc_dev);
+ if (!adc_dev->shared)
+ cc10001_adc_power_up(adc_dev);
/* Calculate delay step for eoc and sampled data */
delay_ns = adc_dev->eoc_delay_ns / CC10001_MAX_POLL_COUNT;
@@ -205,7 +209,8 @@ static u16 cc10001_adc_read_raw_voltage(struct iio_dev *indio_dev,
val = cc10001_adc_poll_done(indio_dev, chan->channel, delay_ns);
- cc10001_adc_power_down(adc_dev);
+ if (!adc_dev->shared)
+ cc10001_adc_power_down(adc_dev);
return val;
}
@@ -322,8 +327,10 @@ static int cc10001_adc_probe(struct platform_device *pdev)
adc_dev = iio_priv(indio_dev);
channel_map = GENMASK(CC10001_ADC_NUM_CHANNELS - 1, 0);
- if (!of_property_read_u32(node, "adc-reserved-channels", &ret))
+ if (!of_property_read_u32(node, "adc-reserved-channels", &ret)) {
+ adc_dev->shared = true;
channel_map &= ~ret;
+ }
adc_dev->reg = devm_regulator_get(&pdev->dev, "vref");
if (IS_ERR(adc_dev->reg))
@@ -368,6 +375,14 @@ static int cc10001_adc_probe(struct platform_device *pdev)
adc_dev->eoc_delay_ns = NSEC_PER_SEC / adc_clk_rate;
adc_dev->start_delay_ns = adc_dev->eoc_delay_ns * CC10001_WAIT_CYCLES;
+ /*
+ * There is only one register to power-up/power-down the AUX ADC.
+ * If the ADC is shared among multiple CPUs, always power it up here.
+ * If the ADC is used only by the MIPS, power-up/power-down at runtime.
+ */
+ if (adc_dev->shared)
+ cc10001_adc_power_up(adc_dev);
+
/* Setup the ADC channels available on the device */
ret = cc10001_adc_channel_init(indio_dev, channel_map);
if (ret < 0)
@@ -402,6 +417,7 @@ static int cc10001_adc_remove(struct platform_device *pdev)
struct iio_dev *indio_dev = platform_get_drvdata(pdev);
struct cc10001_adc_device *adc_dev = iio_priv(indio_dev);
+ cc10001_adc_power_down(adc_dev);
iio_device_unregister(indio_dev);
iio_triggered_buffer_cleanup(indio_dev);
clk_disable_unprepare(adc_dev->adc_clk);
diff --git a/drivers/iio/adc/mcp3422.c b/drivers/iio/adc/mcp3422.c
index b96c636470ef..3555122008b4 100644
--- a/drivers/iio/adc/mcp3422.c
+++ b/drivers/iio/adc/mcp3422.c
@@ -404,7 +404,6 @@ MODULE_DEVICE_TABLE(of, mcp3422_of_match);
static struct i2c_driver mcp3422_driver = {
.driver = {
.name = "mcp3422",
- .owner = THIS_MODULE,
.of_match_table = of_match_ptr(mcp3422_of_match),
},
.probe = mcp3422_probe,
diff --git a/drivers/iio/adc/ti-adc081c.c b/drivers/iio/adc/ti-adc081c.c
index b3a82b4d1a75..2c8374f86252 100644
--- a/drivers/iio/adc/ti-adc081c.c
+++ b/drivers/iio/adc/ti-adc081c.c
@@ -140,7 +140,6 @@ MODULE_DEVICE_TABLE(of, adc081c_of_match);
static struct i2c_driver adc081c_driver = {
.driver = {
.name = "adc081c",
- .owner = THIS_MODULE,
.of_match_table = of_match_ptr(adc081c_of_match),
},
.probe = adc081c_probe,
generated by cgit (git 2.34.1) at 2025-05-02 01:41:01 +0000